HEAT oven to 350ºF.
SPREAD 1/2 cup enchilada sauce onto bottom of 13x9-inch baking dish sprayed with cooking spray. Combine 1/2 cup of the remaining enchilada sauce with turkey, 1/2 cup cheese and 1/4 cup onions.
SPOON 1/4 cup turkey mixture down center of each tortilla; roll up. Place, seam-sides down, in prepared dish; top with remaining enchilada sauce and cheese. Cover.
BAKE 30 min. or until cheese is melted, uncovering for the last 5 min. Meanwhile, combine tomatoes, remaining onions, cilantro and dressing.
TOP enchiladas with tomato mixture before serving.